From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 572CC3F077A for ; Tue, 20 Jan 2026 13:09:24 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768914564; cv=none; b=oZM3qZCJMGZrxET73K4EmypeF9GEM4+OFOCvXy2MUgtcT3b/xD21X92RVJnqexbg/oBfkk6G7jhAdVB0acAx3zlo/YT/wpZCxjRjsRErjedqbNBxhwicQ5yusMIdNRjPUjWJxPqYxDkihi1e1vHDSues44uTDta08ItOZJ0v/GE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768914564; c=relaxed/simple; bh=D0kl4g4FepxIzztpzyZF1praxIJ1d4zKFuQ7SPbnZNg=; h=Subject:To:Cc:From:Date:Message-ID:MIME-Version:Content-Type; b=tsvsNZIVu6YYPs2QpnmVyJEk5gI4BggWVEmvnzzrKR5ZnglkCkcnpyIQCS4SVUEksmRDLHSp8O12nbnJCI9Ydn3SzCeq5drcN1bnaCT4xbI+rR2QEnqsYP9avSDRH1GnIJM2rwkft0Hp4wUxQt2C57Eg/HgeNEI5BH9WoWrC8dg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=nC2sxm+T; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="nC2sxm+T" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8A36FC16AAE; Tue, 20 Jan 2026 13:09:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1768914563; bh=D0kl4g4FepxIzztpzyZF1praxIJ1d4zKFuQ7SPbnZNg=; h=Subject:To:Cc:From:Date:From; b=nC2sxm+TIJ+hZEagQlCDC5YTkDyVv77AOEiPs9f6k5L+MKBMMaYWLxGlFEeQGcK3f GmcDKMbg3Q3iBsbJkFQbhsCzYdnABNlkBuWZZLT+E1Vv9ebxYKgV+Bs3dm2Eo9iI1v Tg+CfaMGlYl/LBlJ4gMuP58tay5tqEg/Ft2D4uzs= Subject: FAILED: patch "[PATCH] mm/damon/sysfs-scheme: cleanup access_pattern subdirs on" failed to apply to 6.6-stable tree To: sj@kernel.org,akpm@linux-foundation.org,jiapeng.chong@linux.alibaba.com,stable@vger.kernel.org Cc: From: Date: Tue, 20 Jan 2026 14:09:15 +0100 Message-ID: <2026012015-democracy-snowdrop-9f8c@gregkh> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit The patch below does not apply to the 6.6-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to . To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.6.y git checkout FETCH_HEAD git cherry-pick -x 392b3d9d595f34877dd745b470c711e8ebcd225c # git commit -s git send-email --to '' --in-reply-to '2026012015-democracy-snowdrop-9f8c@gregkh' --subject-prefix 'PATCH 6.6.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From 392b3d9d595f34877dd745b470c711e8ebcd225c Mon Sep 17 00:00:00 2001 From: SeongJae Park Date: Wed, 24 Dec 2025 18:30:37 -0800 Subject: [PATCH] mm/damon/sysfs-scheme: cleanup access_pattern subdirs on scheme dir setup failure When a DAMOS-scheme DAMON sysfs directory setup fails after setup of access_pattern/ directory, subdirectories of access_pattern/ directory are not cleaned up. As a result, DAMON sysfs interface is nearly broken until the system reboots, and the memory for the unremoved directory is leaked. Cleanup the directories under such failures. Link: https://lkml.kernel.org/r/20251225023043.18579-5-sj@kernel.org Fixes: 9bbb820a5bd5 ("mm/damon/sysfs: support DAMOS quotas") Signed-off-by: SeongJae Park Cc: chongjiapeng Cc: # 5.18.x Signed-off-by: Andrew Morton diff --git a/mm/damon/sysfs-schemes.c b/mm/damon/sysfs-schemes.c index 2c7a2b54be57..3a699dcd5a7f 100644 --- a/mm/damon/sysfs-schemes.c +++ b/mm/damon/sysfs-schemes.c @@ -2152,7 +2152,7 @@ static int damon_sysfs_scheme_add_dirs(struct damon_sysfs_scheme *scheme) return err; err = damos_sysfs_set_dests(scheme); if (err) - goto put_access_pattern_out; + goto rmdir_put_access_pattern_out; err = damon_sysfs_scheme_set_quotas(scheme); if (err) goto put_dests_out; @@ -2190,7 +2190,8 @@ static int damon_sysfs_scheme_add_dirs(struct damon_sysfs_scheme *scheme) put_dests_out: kobject_put(&scheme->dests->kobj); scheme->dests = NULL; -put_access_pattern_out: +rmdir_put_access_pattern_out: + damon_sysfs_access_pattern_rm_dirs(scheme->access_pattern); kobject_put(&scheme->access_pattern->kobj); scheme->access_pattern = NULL; return err;